SPIRE Observers' Manual
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SPIRE Observers' Manual
Announcement of Opportunity for Key Programmes
version 1.2, 11-Sep-2007
HERSCHEL-HSC-DOC-0789, version 1.2
11-Sep-2007
Table of Contents
1. Introduction
1.1. The Observatory
1.2. Purpose and Structure of Document
1.3. Acknowledgements
1.4. Acronyms
2. The SPIRE Instrument
2.1. Instrument Overview
2.2. Photometer
2.2.1. Photometer concept, optics and layout
2.2.2. Beam Steering Mirror (BSM)
2.2.3. Filters and passbands
2.2.4. Photometer Calibration Source (PCAL)
2.2.5. Photometer Detector Arrays
2.3. Spectrometer
2.3.1. Fourier-Transform Spectrometer Concept
2.3.2. Spectrometer Optics and Layout
2.3.3. SCAL
2.3.4. Filters and passbands
2.3.5. Spectrometer Detector Arrays
2.3.6. FTS spectral resolution and instrumental line shape
2.4. Common Instrument Parts
2.4.1.
3
He Cooler and Thermal Strap System
2.4.2. Warm Electronics
3. General performance (scientific capabilities)
3.1. Sensitivity
3.1.1. Photometer Sensitivity Estimates
3.1.2. Spectrometer Sensitivity Estimates
3.2. Some examples
3.2.1. Point source photometry
3.2.2. Small map
3.2.3. Large map
3.2.4. FTS Examples
4. Observing with SPIRE
4.1. SPIRE Photometer AOT
4.1.1. Point Source
4.1.2. Small Map
4.1.3. Large Map
4.2. SPIRE Spectrometer AOT
4.2.1. Spectral Resolution
4.2.2. Pointing Modes
4.2.3. Image Sampling
5. Calibration Framework
5.1. Calibration Requirements
5.2. Strategy
5.3. On-board Calibrators
5.4. Astronomical Calibrators
5.5. SPIRE calibration products
6. Using HSpot to Create SPIRE Observations
6.1. Overview
6.2. Working with the SPIRE Photometer or Spectrometer Observation Template
6.3. HSpot Components for Settings Up a SPIRE Photometer Observation
6.3.1. Choosing the Source Type (Observing Mode)
6.3.2. Setting the Repetition Factor - The Time of the Observation
6.3.3. Inputing Source Flux Estimates
6.3.4. Setting Chop Avoidances in Chopping Panel for Point Source and Small Map Observations
6.3.5. Setting Parameters for Large Map Observations
6.3.6. Getting Time and Noise Estimates
6.4. HSpot Components for Settings Up a SPIRE Spectrometer Observation
6.4.1. Choosing the Pointing Mode
6.4.2. Choosing the Image Sampling
6.4.3. Choosing the Spectral Resolution
6.4.4. Setting the Repetition Factor - The Time of the Observation
6.4.5. Inputing Source Flux Estimates
6.4.6. Setting Map Parameters for Raster Observations
6.4.7. Getting Time and Noise Estimates
6.5. Time estimation detailed messages
6.5.1. No message level selected
6.5.2. Level-1 messages
6.5.3. Level-2 messages
6.5.4. Message levels 3, 4 and 5
6.5.5. What additional information from the detailed messages can be used?
6.6. Example: SPIRE Photometer
6.6.1. SPIRE Photometer Point Source
6.6.2. SPIRE Photometer Point Source With Chop Avoidance Angle
6.6.3. SPIRE Photometer Small Map
6.6.4. SPIRE Photometer Large Map
6.6.5. SPIRE Photometer large map with map centre offset
6.6.6. SPIRE Photometer large map with array constraints
6.7. Example: SPIRE Spectrometer
6.7.1. SPIRE Spectrometer Single Pointing Mode, Sparse Sampling
6.7.2. SPIRE Spectrometer Raster Mode
6.7.3. SPIRE Spectrometer Raster Mode: tailoring the map area to the source shape
7. Data product expectation and SPIRE pipeline
7.1. SPIRE data deliveries
7.1.1. Observation context and Product Access Layer
7.1.2. Access to the higher level products
7.2. SPIRE pipeline
7.2.1. Photometer and spectrometer common stages
7.2.2. Photometer pipeline
7.2.3. Spectrometer pipeline
8. Changes to the document
8.1. Changes in version 1.2
8.2. Changes in version 1.1
References
List of Figures
2.1.
SPIRE location on the sky.
2.2.
A model of the SPIRE photometer.
2.3.
SPIRE photometer overall passbands for typical detectors.
2.4.
A schematic view of the SPIRE photometer bolometer arrays.
2.5.
FTS layout.
2.6.
SPIRE spectrometer filter transmission curves for typical detectors.
2.7.
SPIRE spectrometer bolometer arrays on the sky.
2.8.
The resolving power of SPIRE FTS.
2.9.
Basic principles of bolometer operation.
3.1.
Spectral Energy Distribution of a star-forming galaxy.
3.2.
SPIRE Spectrometer line flux and continuum limits.
4.1.
Nodding and removal of signal offsets
4.2.
The 7-point hexagonal jiggle pattern.
4.3.
Chopping and nodding scheme.
4.4.
Small Map observation
4.5.
SPIRE Large Map coverage.
4.6.
Large Map scan angles.
4.7.
Large Map guaranteed area for one scan direction.
4.8.
The area of sky covered in Large Map with cross scanning.
4.9.
SPIRE photometer coverage maps.
4.10.
SMEC scans diagram.
4.11.
Spectrometer raster examples.
4.12.
SPIRE Spectrometer spatial sampling.
6.1.
The main HSpot window.
6.2.
The Photometer AOT window on opening.
6.3.
Photometer AOT with Large Map selected.
6.4.
Repetition factor box.
6.5.
Source Flux Estimates Table for Point Sources.
6.6.
Source Flux Estimates Table for Small and Large Maps.
6.7.
Photometer Chopping Panel for Point Source and Small Map.
6.8.
Warning message when one or more chop avoidance angles are requested.
6.9.
Photometer Large Map Parameters Panel.
6.10.
Time Estimation Summary for Photometer Point Source.
6.11.
Time Estimation Summary for Photometer Small Map.
6.12.
Time Estimation Summary for Photometer Large Map.
6.13.
The Spectrometer AOT window on opening.
6.14.
Spectrometer AOT with "Raster" selected.
6.15.
Repetition factor box for the Spectral Resolutions for High, Medium or Low.
6.16.
Source Flux Estimates Table for High, Medium and "High and Low" Resolution.
6.17.
Source Flux Estimates Table for Low Resolution.
6.18.
Spectrometer Raster Map Parameters Panel.
6.19.
Time Estimation Summary for Spectrometer Default observation: single point, sparse, high resolution with 2 repetitions.
6.20.
Time Estimation Summary for Spectrometer Low Resolution.
6.21.
Time Estimation Summary for Spectrometer "High and Low" Resolution.
6.22.
Time estimation details initial window.
6.23.
Time estimation details, messages level 1.
6.24.
Time estimation details, messages level 2.
6.25.
Time estimation details, messages level 3.
6.26.
The initial HSpot window.
6.27.
The initial SPIRE Photometer window.
6.28.
Target name and coordinates window.
6.29.
Target visibility.
6.30.
Background wavelength dialogue.
6.31.
Background estimation for 07 July 2009 at 200
μ
m.
6.32.
The SPIRE Photometer window after target input.
6.33.
Input source flux window.
6.34.
Observation time estimation.
6.35.
Observation time estimation details for level-1 messages.
6.36.
Access to archive images menu.
6.37.
Downloading a DSS image.
6.38.
The DSS image and the Overlay menu options.
6.39.
The IPAC catalogue window.
6.40.
The catalogue options window.
6.41.
The window to select the observing date.
6.42.
SPIRE Photometer Point Source AOR overlaid on a DSS image.
6.43.
Warning message when one or more chop avoidance angles are requested.
6.44.
Chop avoidance angles filled in.
6.45.
AORs for two extreme visibility dates for M82.
6.46.
Pointing table as appears after pressing the "Pointing Table" button.
6.47.
SPIRE Point source photometry AOR shown for a date outside the chop avoidance period.
6.48.
SPIRE Photometer Point Source photometry with chopping on a bright galaxy.
6.49.
SPIRE Photometer small map initial screen.
6.50.
Flux estimation for the SPIRE Photometer small map.
6.51.
Time estimation for the SPIRE Photometer small map.
6.52.
Time estimate breakdown.
6.53.
Time estimation for the SPIRE Photometer small map.
6.54.
FITS file read dialogue window.
6.55.
SPIRE Photometer small map AOR overlay.
6.56.
SPIRE Photometer large map initial screen.
6.57.
Input fluxes for the target.
6.58.
Time estimation for large map observation.
6.59.
Time estimation breakdown for large map observation.
6.60.
Time estimation for large map observation.
6.61.
Large map AOR overlay on the 100
μ
m IRAS image downloaded from ISSA.
6.62.
Large map 60x10 arcmin AOR overlay on the 100
μ
m IRAS image and the Herschel focal plane.
6.63.
Large map 60x10 arcmin with offset centre AOR overlay on the 100
μ
m IRAS image and the Herschel focal plane.
6.64.
Large map 60x10 arcmin with offset centre AOR overlay on the 100
μ
m IRAS image and the Herschel focal plane for three dates.
6.65.
SPIRE Photometer Large Map initial window with map angle constraints.
6.66.
Large map 60x10 arcmin AOR overlay on the 100
μ
m IRAS image.
6.67.
Large map 10x60 arcmin AOR overlay on the 100
μ
m IRAS image.
6.68.
Initial screenshot of the SPIRE Spectrometer with H spectral resolution.
6.69.
SPIRE Spectrometer: Source Flux Estimate table.
6.70.
Time estimation for the SPIRE Spectrometer, single pointing, sparse sampling and high spectral resolution. Default repetitions of 2.
6.71.
Time estimation for the SPIRE Spectrometer, single pointing, sparse sampling and high spectral resolution. The repetition factor is set to 12.
6.72.
Time estimation for the SPIRE Spectrometer, single pointing, sparse sampling and
low
spectral resolution. The repetition factor is set to 12.
6.73.
Time estimation for the SPIRE Spectrometer, single pointing, sparse sampling and high and low spectral resolution. The repetition factors are 12 and 18 for high and low resolution scans respectively.
6.74.
Time estimation for the SPIRE Spectrometer, single pointing, sparse sampling and high and low spectral resolution. The repetition factors are 12 and 18 for high and low resolution scans respectively.
6.75.
Detailed time breakdown for the SPIRE Spectrometer, single pointing, sparse sampling and high and low spectral resolution with repetition factors 12 and 18 (level-1 verbosity).
6.76.
Overlay of the Single pointing SPIRE Spectrometer observation AOR.
6.77.
Initial screen for the SPIRE Spectrometer, raster map, intermediate spatial sampling and medium spectral resolution.
6.78.
Time estimation for the SPIRE Spectrometer, raster map, intermediate spatial sampling and medium spectral resolution.
6.79.
Overlay of the SPIRE Spectrometer raster observation AOR.
6.80.
SPIRE Spectrometer raster map, covering NGC253 with a 10x8 point raster.
6.81.
Selected fields to cover the disk of NGC253.
6.82.
Concatenated AORs for the raster example.
List of Tables
2.1.
SPIRE overall characteristics.
3.1.
Estimated SPIRE Photometer sensitivities.
3.2.
SPIRE Photometer point source photometry.
3.3.
SPIRE Photometer small map.
3.4.
SPIRE Photometer large map examples. Cross-linked scans (A+B).
3.5.
SPIRE Photometer large map examples. Single scans (A or B).
3.6.
FTS point source/sparse map; high resolution
3.7.
FTS point source/sparse map; low resolution
4.1.
User input parameters for Photometer AOT with point source selected
4.2.
The build up of positions of the 64-point jiggle small map
4.3.
User input parameters for Photometer AOT with small map selected
4.4.
User input parameters for Photometer AOT with large map selected
4.5.
User input parameters for Spectrometer AOT
5.1.
A summary of the main SPIRE calibration requirements.
7.1.
Observation context entries.
7.2.
SPIRE scientific products in the observation context.
7.3.
SPIRE level-0 products. TBC.